Question

所以我一直在努力解决这个神秘问题（至少对我而言）。它仅在App Store上发生。我尽力检查了BookingViewModel代码，并确信那里应该没有崩溃，所以我做了一些清理工作，然后将新的版本上载到TestFlight，然后再次发生崩溃。 >

这是Fabric的Crashlytics崩溃日志的屏幕截图：

ISO8601

和一部分堆栈跟踪：

#0. Crashed: com.apple.main-thread
0  libswiftCore.dylib             0x103e70314 swift_unknownRelease + 24
1  libswiftCore.dylib             0x103e37b5c swift_arrayDestroy + 68
2  libswiftCore.dylib             0x103c308c0 (Missing)
3  libswiftCore.dylib             0x103e40f04 swift_unownedCheck + 88
4  appname                        0x102940848 BookingViewModelBookingViewModelBooking first-element-marker  empty-list String (BookingViewModel.swift:167)

最后，我的BookingViewModel中的代码包含了崩溃日志中描述的第167行（我已经编辑了该问题的代码，我删除了一些行，但想法仍然存在，也使代码简短）：

init(_ booking: Booking, withCompleteInfoCompletion completeInfo: @escaping BookingViewModelCompleteInfoCompletion) {
        let createdDate = booking.createdAt ?? ""
        let username = booking.username ?? ""
        let firstName = booking.firstName ?? ""
        let lastName = booking.lastName ?? ""
        let age = booking.age ?? ""
        let birthdate = booking.birthdate ?? ""

        // Final values for completion

        let userDetails = "\(firstName) \(lastName) \(age) / \(birthdate)".condensedWhitespace

        // Booking Status and total amount

        var bookingStatus: BookingStatus = .forProcessing

        if let status = booking.status,
            let statusId = status.id,
            let newBookingStatus = BookingStatus(rawValue: statusId) {
            bookingStatus = newBookingStatus
        }

        var totalAmount: Double = 0.00

        if bookingStatus == .forPayment || bookingStatus == .paid || bookingStatus == .forConfirmation {
            if let amounts = booking.amount {
                for amount in amounts {
                    if let amountString = amount.amount,
                        let amountDouble = Double(amountString) {
                        totalAmount = totalAmount + amountDouble
                    }
                }
            }
        }

        self.subtotal = String(format: "%.2f", arguments: [totalAmount])

        // Payment Method

        var paymentType: PaymentType = .cod
        if let paymentMethod = booking.paymentMethod,
            let type = PaymentType(rawValue: paymentMethod) {
            paymentType = type
        }

        // Initial Total

        let initialTotal = "₱\(self.getTotalAmount(.paypal))"

        completeInfo(
            "₱\(self.subtotal)", // line 167
            userDetails
        )
    }

问题是：对于从App Store或Testlfight下载的应用程序如何崩溃，而处于开发/调试模式（在Xcode中运行）却没有崩溃的问题，是否存在现有想法？

此外，是否可以在App Store上模拟项目的状态（例如，我已经读过某人的回答，因此可以将项目的代码签名更改为iOS Distribution）？< / p>

谢谢！

Answer 1

好的，如果外面有人被此类问题困扰，那么将导致奇怪崩溃的行放在主线程中会有所帮助！

我不确定为什么，也许我应该更多地检查代码。再说一次，我只需要像这样将崩溃行放入主线程即可：

DispatchQueue.main.async {
    self.bookingViewModel = BookingViewModel(self.booking, withCompleteInfoCompletion: {
    ....
    })
}

Larme的上述评论对我有很大帮助！

第一个元素标记空列表字符串。崩溃仅在生产中发生

1 个答案: